- â\88\80f. ð\9d\90\94â¦\83fâ¦\84 â\86\92 â\88\80I,K1,V. â¬\87*[b,f]L1 ≘ K1.ⓑ{I}V →
- â\88¨â\88¨ â\88\83â\88\83K2. G â\8a¢ K1 â\8a\92[h] K2 & â¬\87*[b,f]L2 ≘ K2.ⓑ{I}V
- | â\88\83â\88\83K2. G â\8a¢ K1 â\8a\92[h] K2 & â¬\87*[b,f]L2 ≘ K2.ⓧ & G ⊢ ⬈*[h,V] 𝐒⦃K2⦄.
+ â\88\80f. ð\9d\90\94â¦\83fâ¦\84 â\86\92 â\88\80I,K1,V. â\87©*[b,f]L1 ≘ K1.ⓑ{I}V →
+ â\88¨â\88¨ â\88\83â\88\83K2. G â\8a¢ K1 â\8a\92[h] K2 & â\87©*[b,f]L2 ≘ K2.ⓑ{I}V
+ | â\88\83â\88\83K2. G â\8a¢ K1 â\8a\92[h] K2 & â\87©*[b,f]L2 ≘ K2.ⓧ & G ⊢ ⬈*[h,V] 𝐒⦃K2⦄.